A.
[tex]\begin{gathered} V=\pi\times(\frac{7}{2})^2\times\frac{4}{3} \\ \\ V=51.31 \end{gathered}[/tex]
TRUE, YES
B.
[tex]\begin{gathered} V=\frac{1}{3}\times25\times6 \\ \\ V=50 \end{gathered}[/tex]
FALSE because is equal not greater, NO
C.
[tex]\begin{gathered} V=\frac{4}{3}\pi\times(4.6)^3 \\ \\ V=407.72 \end{gathered}[/tex]
TRUE, YES
